Heart valve pivot arrangement



FIG. 1 is a top perspective view of the heart valve pivot arrangement, having flat bileaflet configuration, in a closed position;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a cross-sectional view taken along line 5--5 of FIG. 3;

FIG. 6 is a cross-sectional view, of a second embodiment, having a curved bileaflet configuration;

FIG. 7 is a cross-sectional view, of a third embodiment, similar to that shown in FIG. 5, having different guide projections in the wall structure;

FIG. 8 is a cross-sectional view, of a fourth embodiment, similar to that shown in FIG. 6, having different guide projections in the wall structure;

FIG. 9 is a top perspective view of FIG. 1 in an open position;

FIG. 10 is a bottom perspective view thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a cross-sectional view taken along line 13--13 of FIG. 11;

FIG. 14 is a cross-sectional view, of the second embodiment shown in FIG. 6, in an open position;

FIG. 15 is a cross-sectional view, of the third embodiment shown in FIG. 7, in an open position;

FIG. 16 is a cross-sectional view, of the fourth embodiment shown in FIG. 8, in an open position;

FIG. 17 is a side elevational view of that shown in FIGs. 1-8, all other sides being a mirror image thereof;

FIG. 18 is a front elevational view to that shown in FIGS. 9-16, the rear view being a mirror image thereof; and,

FIG. 19 is a side elevational view to that shown in FIGS. 9-16, the opposite side being a mirror image to that shown. 

The ornamental design for heart valve pivot arrangement, as shown and described. 